The parrot fish is a tropical marine fish species that is known for its distinctive beak-like mouth and bright, colorful appearance. 

In terms of pH and temperature, parrot fish prefer a slightly alkaline environment with a pH range of 7.5 to 8.4. They also require a temperature range between 75°F and 82°F (24°C to 28°C), which is relatively warm. It is important to maintain these optimal water conditions in their aquarium to ensure their health and wellbeing.

Parrot fish are known for their vibrant colors, which can vary depending on the species and their age. They are active swimmers and require a spacious aquarium with plenty of hiding spots and swimming areas. They are also known to be herbivorous, feeding primarily on algae and other plant matter. However, some species may also consume small invertebrates and crustaceans. It is important to provide them with a varied diet to ensure their nutritional needs are met. Additionally, parrot fish are known to be territorial and should be kept with other peaceful species in a large aquarium to minimize aggression.